Bellouize, Siham, et al. “Immediat and Long Term Results of Mitral Valve Replacement in Patients With Rheumatic Mitral Stenosis and Left Ventricular Dysfunction”. RA Journal Of Applied Research, vol. 4, no. 03, Mar. 2018, pp. 1506-13, http://rajournals.in/index.php/rajar/article/view/90.